Printer&#39;s block.



No. 792,332. x PATENTED JUNE 13, 1905. J. L. LEE.

PRINTERS BLOCK.

APPLICATION FILED JUNE 27. 1901.

WITNESSES: INVNTOR ATTORNEYS Patented June 13, 190 5.

PATENT OFFICE.

JAMES L. LEE, OF CHICAGO, ILLINOIS.

PRINTERS BLOCK.

SPECIFICATION forming part of Letters Patent No. 792,332, dated. June13, 1905.

Application filed June 27,1901. Serial No. 66,309.

To (all whmn it may concern.-

Be it known that I, JAMES L. LEE, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Printers Blocks, ofwhich the following is a full, clear, and exact specification.

My invention relates to printers blocks or hooks for holding stereotypeand other printing-plates; and it has for its object to provide animproved construction whereby the screw which moves the hook will haveadequate bearing free from an objectionable degree of friction.

A further object of my invention is to minimize the number of parts andsimplify the construction.

IVith these ends in view my invention consists in certain features ofnovelty in the construction, combination, and arrangement of parts bywhich the said objects and certain other objects hereinafter appearingare attained, all as fully described with reference to the accompanyingdrawings,and more particularly pointed out in the claims.

In the said drawings, Figure 1 is a plan view of a printers blockconstructed according to my invention. Fig. 2 is an end elevationthereof. Fig. 3 is a cross-section taken on the line 3 3, Fig. 1. Fig. 4is a plan section taken on the line a 4, Fig. 5. Fig. 5 is an elevationof the end opposite that presented in Fig. 2; and Fig. 6 is alongitudinal section taken on the line 6 6, Fig. l.

1 is a block which is preferably solid or formed of a single piece andwhich is provided with a recess 2, extending longitudinally thereof, forthe accommodation of a screw 3 and a slide 4, which runs on said screwin the usual or any suitable manner, but preferably does not touch thebottom of the recess 2. The recess 2 opens upwardly along a portion ofits length through the top or upper face of the block 1, as shown at 5,and fitting accurately within this top opening of the recess 2 is ashank 6, which is secured to or formed on the slide 1 and which carriesa hook 7 of the usual or any suitable construction, adapted to engagethe edge of the plate to be held. If desired, the sides of the shank 6may also be provided with wings or lateral lugs 8, which engage incorresponding grooves 9 in the sides of the recess in which the shank 6moves, so as to afford a firm bearing for the shank irrespective of anybearing which may be afforded by the screw 3.

One end of the recess 2 opens out into a larger recess 10, which isformed in the end of the block 1 and which receives a disk 11, formed onor secured to the screw 3 and having radial key-slots 12 formed in itsouter face for the reception of a turning-key, whereby the screw may berotated and the hook 7 accordingly adjusted back and forth for engagingor disengaging the plate. On the inner side or face of the disk 11 isformed a journal 13, which is afforded a bearing directly upon the block1 by means of a counterbore, being represented by the same line whichillustrates the journal 13. By means of this journal 13 it will be seen,therefore, that the screw is afforded adequate hearing at one enddirectly upon the block and is held against lateral movement and alsoend movement in one direction. This journal 13 is so formed andproportioned with relation to the hook 7 that as the hook approaches thelimit of its outward movement it will lap over the journal 13, thuspermitting the engaging face of the hook to come as near as possible tothe outer edge of the block 1. The opposite end of the block is formedwith a counter-bore which communicates with the recess 2 and in which isarranged an enlarged disk 14, constituting a journal in which a reducedend 15 of the screw 3 is threaded, the threads of the end 15 beingpreferably of opposite turn to those of the main part of the screw. Thedisk 14 may be provided with sockets 16 for the application of aturning-wrench, whereby the disk may be firmly secured on the end of thescrew, and thereby caused to turn with the latter and constitute a firmand easy-running support therefor, while at the same time holding thescrew from being pulled out endwise.

Having thus described my invention, what Iclaim as new therein, anddesire to secure by Letters Patent, is-- 1. In a printers block thecombination of a block proper having a longitudinal recess provided withan enlarged journal-bearing formed in one end of said block and anenlarged recess formed in the other end of said block and having acounterbore of smaller diameter than said latter recess constituting asecond journal-bearing, a screw located ,in said recess, a hookoperatively connected with said screw, an enlarged disk secured to oneend of said screw and fitting said first journal-bearing, a disk securedto the other end of said screw and having key-slots in one face and areduced journal on its other face fitting said second journal-bearing,substantially as set forth.

2. In a printers block the combination of a block proper, a screwrecessed in said block proper, means at one end of said screw forholding it against end thrust in one direction, a member countersunk inthe block and threaded on the opposite end of said screw for holding thelatter against end thrust in the opposite direction, the said latterthreads being of opposite turn to those of the main part of the screwand a slide having a hook, arranged in operative relation to said screw,substantially as set forth.

3. In a printers block the combination of a block proper, a screwrecessed in said block, a turning disk or device secured to one end ofsaid screw and having bearing against one end of said block for holdingthe screw against end thrust in one direction, a circular membercountersunk in the opposite end of the block and threaded on the screwat the latter end for holding the screw against end thrust in theopposite direction, the said latter threads being of opposite turn tothose of the main part of the screw, and a slide having a hook, arrangedin operative relation to said screw, substantially as set forth.

JAMES L. LEE.

\Vitnesses:

F. A. HOPKINS, D. C. GURNEE.

